This was left out anonymously in the wee hours of Friday morning at the
1998 NPL Convention in Atlanta, as a fake Hidden Contest. However:
(1) By that point (unbeknownst to me) the real Hidden Contest had already
been solved; and
(2) The item I had put out for people to go to to complete the last step
of the fake Hidden Contest (which had a tag with an orthogonal-tour puzzle
whose answer was "This is not the Hidden Contest") wasn't found by anybody.
So as a cryptic it was doable, but as a fake Hidden Contest it was not a
success.